ASG STi Duty One 4.5mm BB Blowback Air Pistol

ASG DutyOne 4.5 mm BB Co2 Air Pistol

The ASG STi Duty One is a high‑quality, fully licensed replica of the modernized 1911‑style pistol designed by STI® International of Texas, USA. This blowback version delivers strong realism, with the metal slide cycling on every shot to provide authentic recoil and handling.

Steel BBs are loaded into the drop‑out 20‑round magazine, while the 12g CO₂ cartridge is cleverly housed inside the pistol grip using ASG’s Easy‑Load system. The Duty One also features an integrated Weaver accessory rail, allowing the addition of tactical lights or lasers.

With refined ergonomics, a high‑rise beavertail grip, STI‑marked panels, and unique serial numbering, this CO₂ pistol offers both an excellent shooting experience and striking display realism.

• Fully licensed by STI® International

• Metal slide with authentic STI® markings

• Blowback action for realistic recoil

• Semi‑automatic CO₂ operation

• 20‑round drop‑out magazine (4.5mm steel BB)

• Integrated Weaver rail for accessories

• High‑rise beavertail grip for improved control

• Unique serial number

• Comfortable, ergonomic grip design

• Calibre: 4.5mm Steel BB

• Overall Length: 220 mm / 8.8"

• Barrel Length: 115.5 mm / 4.7"

• Magazine Capacity: 20 rounds

• Standard Magazine: Ref. 16731

• Holster Compatibility: Ref. 19507

• Velocity: 121 m/s (397 fps)*

• Energy: 2.6 Joule

• Weight: 825 g / 1.8 lb

• Power Source: 12g CO₂

• Hop‑Up: None